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AISI 440B Stainless Steel vs. EN 2.4951 Nickel

AISI 440B stainless steel belongs to the iron alloys classification, while EN 2.4951 nickel belongs to the nickel alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 440B stainless steel and the bottom bar is EN 2.4951 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 3.0 to 18
34
Fatigue Strength, MPa 260 to 850
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
76
Shear Strength, MPa 460 to 1110
500
Tensile Strength: Ultimate (UTS), MPa 740 to 1930
750
Tensile Strength: Yield (Proof), MPa 430 to 1860
270

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 870
1150
Melting Completion (Liquidus), °C 1480
1360
Melting Onset (Solidus), °C 1370
1310
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 23
12
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
1.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
60
Density, g/cm3 7.7
8.5
Embodied Carbon, kg CO2/kg material 2.2
9.3
Embodied Energy, MJ/kg 31
130
Embodied Water, L/kg 120
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 57 to 110
200
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 27 to 70
25
Strength to Weight: Bending, points 24 to 45
22
Thermal Diffusivity, mm2/s 6.1
3.1
Thermal Shock Resistance, points 27 to 70
23

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0.75 to 1.0
0.080 to 0.15
Chromium (Cr), % 16 to 18
18 to 21
Cobalt (Co), % 0
0 to 5.0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 78.2 to 83.3
0 to 5.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.75
0
Nickel (Ni), % 0
65.4 to 81.7
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0
0.2 to 0.6